MILLERSVILLE, Pa. (WHTM) – The boyfriend of a student found dead in her Millersville University dorm room told police the 18-year-old woman became unresponsive after he hit her in the face, according to the criminal complaint.

After the couple returned to Hall’s room in Bard Hall at 1:30 a.m., Orrostieta said the altercation started up again and he shoved Hall hard enough to knock her down, causing her to strike her head on a chair, the complaint states.

Orrostieta also admitted he gave Hall a “back hand” to her face, at which time the argument stopped when Hall became unresponsive.

Police said they found Hall unresponsive around 5:20 a.m. while responding to a cardiac arrest call. Orrostieta was kneeling over Hall and attempting CPR when the officers entered the room, the document states.

Orrostieta had blood on his face, hands and jeans and a cut on his forehead. His shirt was ripped and he had visible scratch marks on his chest, police said.

Hall was a freshman from Chadd’s Ford. The cause of her death is pending an autopsy scheduled for Monday.

Orrostieta has been charged with aggravated assault. He is being held in Lancaster County Prison on $1.5 million bail.